Anthropic's Mythos 5 AI model gains US approval for broader use after addressing national security concerns, easing previous restrictions.

The move comes the same day as a new OpenAI model sees a limited release.

Anthropic disabled access to its Fable 5 and Mythos 5 models to comply with a government export control directive citing "national security authorities."

Commerce Secretary Howard Lutnick said he "determined that appropriate safeguards are in place" to grant access to Mythos.

The US government has authorised a limited release of Anthropic's advanced artificial intelligence model, Mythos 5, allowing a small group of trusted American cybersecurity firms…